Body-bolster.



PATENTED AUG. 25, 1908.

0. S. PULLIAM. BODY BOLSTER.

APPLICATION FILED MAR.10, 1908.

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G/F'UW g UNITED STATES PATENT OFFICE.

OSWALD S. PULLIAM, OF PITTSBURG, PENNSYLVANIA, ASSIGNOR TO PITTSBURGH EQUIPMENT COMPANY. OF IITTSBURG, PENNSYLVANIA, A OORPQRATION OF PENNSYLVANIA.

BODY-BOLSTER.

Specification of Letters Patent.

Patented Aug. 25, 1908.

Application filed March 10, 1908. Serial No. 420,185.

I To all whom it mag concern:

Be it known that I, OSWALD S. PULLIAM,

of Pittsburg, in the county of Allegheny and State of Penns lvania, have invented certain new and usefu Improvements in Body-Bolsters, of which the following is a specification.

My invention relates to improvements in b ody-bolsters for cars.

Body-bolsters as heretofore constructed and used have consisted of one of two types,

namely, a single body-bolster} or a double body-bolster. In the have departed from the forms of body-bolsters above mentioned and now so generally employed in railway car construction, and

have designed a triple body-bolster comprising a lar e sill-bearing surface or surfaces all preferabTy made" in a single piece of castmetal.

One of the objects of the present invention, in addition to providing the large bearing surface or surfaces above-referred to, is to provide a construction b which the main load strains, to which a b0 ster'is subjected in practice, are passed to the center-bearing of-the bolster in direct lines.

In the accompanying drawing, which illustrates an application of my invention, Figure 1 is a top plan of a body-bolster constructed in accordance with my invention, showing it in connection with a portion of a car-platform; Fi 2 a vertical sectional view taken 1 on line I II of Fig. 1; Fig. 3,- an end view and Pi 4 a sectional view taken on line III-II of Fig. 1.

Referring to the drawing, and, as preferred, my triple body-bolster consists of an integral cast-metal structure having a central transversely disposed taperin mainbeam 1. This beam 1 is preferaby of I- beaifiform and its upper and lower flanges respectively enter into the construction of the top and bottom members of the bolster proper.

, 2 and 3 designate auxilia or side-beams.

These auxiliary beams ,are a so preferably of present invention, 1'

I-beam form. The ends of the side-beams 2 and 3 are connected by end-beams 4.

The main-beam and. the side-beams are united by intermediate cross-beams 5. The

upper surfaces of all the beams mentioned constitute the top-member of the bolster,

and the lower surfaces constitute the bottom-member of the bolster.

The main-beam 1 is formed with an opening .into which a king-bolt, not shown, is

car-platform 7. The platform 7 z'as illustrated, is provided with projecting-members 8, which members are adapted to enter openings formed in the web 9 of the auxiliarybeam 2. i

What I claim is:

1. An integral cast-metal body-bolster comprising a central transversely disposed tapering main-beam, auxiliary side-beams, end-beams, and intermediate crossbeams uniting the main and auxiliary-beams.

2. A triple body-bolster having a central main-beam, .two auxiliary-beams, and beams uniting the main and auxiliary-beams.

3. The combination, with a car-platform provided with a projecting-member, of a Ody-bolster com rising a central mainbeam, and an auxi iary side-beam having an opening to receive t e platform.

In testimony whereof Iaflix my signature in presence of two witnesses.

OSWALD S. PULLIAM.

- Witnesses EDWIN L. ALLEN, W. G. DOOLITTLE.

the projecting-member of 

